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Author SHA1 Message Date
Darkress
2f8adb70c4 implemented Rlf Instruction 2023-06-06 01:09:16 +02:00
41 changed files with 57 additions and 575 deletions

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@@ -2,42 +2,22 @@ package de.darkress.pic16f84sim;
import de.darkress.pic16f84sim.commands.Command; import de.darkress.pic16f84sim.commands.Command;
import de.darkress.pic16f84sim.decoder.CommandDecoder; import de.darkress.pic16f84sim.decoder.CommandDecoder;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
import de.darkress.pic16f84sim.microcontroller.Watchdog;
import de.darkress.pic16f84sim.parser.Parser;
import java.util.concurrent.TimeUnit; import java.util.ArrayList;
class Main class Main
{ {
public static void main(String[] args) throws InterruptedException { public static void main(String[] args) {
Command[] program = Parser.parser("de/darkress/pic16f84sim/TestPrograms/TPicSim11.LST"); ArrayList<Command> program = new ArrayList<>();
Memory.clearCarryBit();
Memory.initMemory(); Memory.setRegister(0x14, 0B11110000); //240 << 224
program.add(CommandDecoder.decode(0x0D94));
while(ProgramCounter.getPc() < 1024) for(int i = 0; i < program.size(); i++)
{ {
if((Memory.getRegister(0x03) & 0x10) == 0x00) { // Checking WDT in Status Register program.get(ProgramCounter.getPc()).execute();
System.out.println("Resetting device");
Watchdog.resetProgram();
}
System.out.println("Command: " + program[ProgramCounter.getPc()].toString());
program[ProgramCounter.getPc()].execute();
System.out.println(Integer.toHexString(Memory.workingRegister) + " " + Cycles.getCycles());
System.out.println(Integer.toHexString(Memory.getOption()) + " " + Integer.toHexString(Memory.getTimer()));
System.out.println(Integer.toHexString(Memory.getRegister(0x20)) + " " + Integer.toHexString(Memory.getRegister(0x21)));
System.out.println(Integer.toHexString(Memory.getRegister(0x22)) + " " + Integer.toHexString(Memory.getRegister(0x23)));
System.out.println(Integer.toHexString(Memory.getPCLATH()) + " " + Integer.toHexString(Memory.getPCL()) + "\n");
if(ProgramCounter.getPc() == 0x10) {
System.out.println(Memory.getRegister(0x20));
}
} }
} }
} }

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
@@ -16,8 +15,6 @@ public class Addlw extends LiteralCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
int result = literal + Memory.workingRegister; int result = literal + Memory.workingRegister;
checkZeroBit(result); checkZeroBit(result);
@@ -25,5 +22,6 @@ public class Addlw extends LiteralCommandUtils implements Command
checkDigitCarryBit(literal); checkDigitCarryBit(literal);
Memory.workingRegister = result % 256; Memory.workingRegister = result % 256;
ProgramCounter.incPC();
} }
} }

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
@@ -18,8 +17,6 @@ public class Addwf extends FileRegisterCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
int result = Memory.getRegister(address) + Memory.workingRegister; int result = Memory.getRegister(address) + Memory.workingRegister;
checkZeroBit(result); checkZeroBit(result);
@@ -27,5 +24,6 @@ public class Addwf extends FileRegisterCommandUtils implements Command
checkDigitCarryBit(address); checkDigitCarryBit(address);
writeToDestination(destinationBit, address, result); writeToDestination(destinationBit, address, result);
ProgramCounter.incPC();
} }
} }

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@@ -1,8 +1,6 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Andlw extends LiteralCommandUtils implements Command public class Andlw extends LiteralCommandUtils implements Command
{ {
@@ -15,8 +13,6 @@ public class Andlw extends LiteralCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
int result = literal & Memory.workingRegister; int result = literal & Memory.workingRegister;
checkZeroBit(result); checkZeroBit(result);

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
@@ -18,12 +17,11 @@ public class Andwf extends FileRegisterCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
int result = Memory.getRegister(address) & Memory.workingRegister; int result = Memory.getRegister(address) & Memory.workingRegister;
checkZeroBit(result); checkZeroBit(result);
writeToDestination(destinationBit, address, result); writeToDestination(destinationBit, address, result);
ProgramCounter.incPC();
} }
} }

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@@ -1,28 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Bcf extends BitOrientedCommandUtils implements Command
{
private final int address;
private int bitPlacement;
public Bcf(int input)
{
address = input & 0x007F;
bitPlacement = checkBitPlacement(input);
}
@Override
public void execute()
{
ProgramCounter.incPC();
Cycles.incCycles();
int result = Memory.getRegister(address);
result &= ~(1 << bitPlacement); //Mask n-th bit with 0
Memory.setRegister(address, result);
}
}

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@@ -1,11 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Memory;
public class BitOrientedCommandUtils
{
protected int checkBitPlacement(int input)
{
return ((input & 0x0380) >>7);
}
}

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@@ -1,28 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Bsf extends BitOrientedCommandUtils implements Command
{
private final int address;
private int bitPlacement;
public Bsf(int input)
{
address = input & 0x007F;
bitPlacement = checkBitPlacement(input);
}
@Override
public void execute()
{
ProgramCounter.incPC();
Cycles.incCycles();
int result = Memory.getRegister(address);
result |= (1 << bitPlacement);
Memory.setRegister(address, result);
}
}

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@@ -1,31 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Btfsc extends BitOrientedCommandUtils implements Command
{
private final int address;
private int bitPlacement;
public Btfsc(int input)
{
address = input & 0x007F;
bitPlacement = checkBitPlacement(input);
}
@Override
public void execute()
{
ProgramCounter.incPC();
Cycles.incCycles();
int result = Memory.getRegister(address);
if((result & (1 << bitPlacement)) == 0) //Test if bit is clear
{
Nop nop = new Nop();
nop.execute();
}
}
}

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@@ -1,31 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Btfss extends BitOrientedCommandUtils implements Command
{
private final int address;
private int bitPlacement;
public Btfss(int input)
{
address = input & 0x007F;
bitPlacement = checkBitPlacement(input);
}
@Override
public void execute()
{
ProgramCounter.incPC();
Cycles.incCycles();
int result = Memory.getRegister(address);
if((result & (1 << bitPlacement)) > 0) //Test if bit is set
{
Nop nop = new Nop();
nop.execute();
}
}
}

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
import de.darkress.pic16f84sim.microcontroller.Stack; import de.darkress.pic16f84sim.microcontroller.Stack;
@@ -16,9 +15,7 @@ public class Call extends LiteralCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
Cycles.incCycles();
Stack.push(ProgramCounter.getPc() + 1); Stack.push(ProgramCounter.getPc() + 1);
ProgramCounter.setPcFrom11BitLiteral(literal); ProgramCounter.setPcFrom11BitLiteral(literal);
Cycles.incCycles(); //Simulate nop and 2-Cycle instruction
} }
} }

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@@ -1,6 +1,6 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Clrf extends FileRegisterCommandUtils implements Command public class Clrf extends FileRegisterCommandUtils implements Command
@@ -17,12 +17,11 @@ public class Clrf extends FileRegisterCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
final int result = 0; final int result = 0;
checkZeroBit(result); checkZeroBit(result);
writeToDestination(destinationBit, address, result); writeToDestination(destinationBit, address, result);
ProgramCounter.incPC();
} }
} }

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
@@ -9,12 +8,11 @@ public class Clrw extends FileRegisterCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
final int result = 0; final int result = 0;
checkZeroBit(result); checkZeroBit(result);
Memory.workingRegister = result; Memory.workingRegister = result;
ProgramCounter.incPC();
} }
} }

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
@@ -18,12 +17,11 @@ public class Comf extends FileRegisterCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
int result = 255 - Memory.getRegister(address); // Get inverse of 8Bit value int result = 255 - Memory.getRegister(address); // Get inverse of 8Bit value
checkZeroBit(result); checkZeroBit(result);
writeToDestination(destinationBit, address, result); writeToDestination(destinationBit, address, result);
ProgramCounter.incPC();
} }
} }

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
@@ -18,12 +17,11 @@ public class Decf extends FileRegisterCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
int result = Memory.getRegister(address) + 255; // Allow underflow int result = Memory.getRegister(address) + 255; // Allow underflow
checkZeroBit(result); checkZeroBit(result);
writeToDestination(destinationBit, address, result % 256); // Catch underflow writeToDestination(destinationBit, address, result % 256); // Catch underflow
ProgramCounter.incPC();
} }
} }

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
@@ -18,8 +17,6 @@ public class Decfsz extends FileRegisterCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
int result = Memory.getRegister(address) + 255; // Allow underflow int result = Memory.getRegister(address) + 255; // Allow underflow
checkZeroBit(result); checkZeroBit(result);
@@ -31,5 +28,6 @@ public class Decfsz extends FileRegisterCommandUtils implements Command
Nop nop = new Nop(); Nop nop = new Nop();
nop.execute(); nop.execute();
} }
ProgramCounter.incPC();
} }
} }

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Goto extends LiteralCommandUtils implements Command public class Goto extends LiteralCommandUtils implements Command
@@ -15,8 +14,6 @@ public class Goto extends LiteralCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
Cycles.incCycles();
ProgramCounter.setPcFrom11BitLiteral(literal); ProgramCounter.setPcFrom11BitLiteral(literal);
Cycles.incCycles();
} }
} }

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
@@ -18,12 +17,11 @@ public class Incf extends FileRegisterCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
int result = Memory.getRegister(address) + 1; // Allow underflow int result = Memory.getRegister(address) + 1; // Allow underflow
checkZeroBit(result); checkZeroBit(result);
writeToDestination(destinationBit, address, result % 256); // Catch underflow writeToDestination(destinationBit, address, result % 256); // Catch underflow
ProgramCounter.incPC();
} }
} }

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
@@ -18,8 +17,6 @@ public class Incfsz extends FileRegisterCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
int result = Memory.getRegister(address) + 1; int result = Memory.getRegister(address) + 1;
checkZeroBit(result); checkZeroBit(result);
@@ -31,5 +28,6 @@ public class Incfsz extends FileRegisterCommandUtils implements Command
Nop nop = new Nop(); Nop nop = new Nop();
nop.execute(); nop.execute();
} }
ProgramCounter.incPC();
} }
} }

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@@ -1,8 +1,6 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Iorlw extends LiteralCommandUtils implements Command public class Iorlw extends LiteralCommandUtils implements Command
{ {
@@ -15,8 +13,6 @@ public class Iorlw extends LiteralCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
int result = literal | Memory.workingRegister; int result = literal | Memory.workingRegister;
checkZeroBit(result); checkZeroBit(result);

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
@@ -18,12 +17,11 @@ public class Iorwf extends FileRegisterCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
int result = Memory.getRegister(address) | Memory.workingRegister; int result = Memory.getRegister(address) | Memory.workingRegister;
checkZeroBit(result); checkZeroBit(result);
writeToDestination(destinationBit, address, result); writeToDestination(destinationBit, address, result);
ProgramCounter.incPC();
} }
} }

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
@@ -18,12 +17,11 @@ public class Movf extends FileRegisterCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
int result = Memory.getRegister(address); int result = Memory.getRegister(address);
checkZeroBit(result); checkZeroBit(result);
writeToDestination(destinationBit, address, result); writeToDestination(destinationBit, address, result);
ProgramCounter.incPC();
} }
} }

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
@@ -16,8 +15,7 @@ public class Movlw extends LiteralCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
Memory.workingRegister = literal; Memory.workingRegister = literal;
ProgramCounter.incPC();
} }
} }

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
@@ -18,10 +17,9 @@ public class Movwf extends FileRegisterCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
int result = Memory.workingRegister; int result = Memory.workingRegister;
writeToDestination(destinationBit, address, result); writeToDestination(destinationBit, address, result);
ProgramCounter.incPC();
} }
} }

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Nop extends LiteralCommandUtils implements Command public class Nop extends LiteralCommandUtils implements Command
@@ -11,6 +10,5 @@ public class Nop extends LiteralCommandUtils implements Command
{ {
// Do nothing, just increment the PC // Do nothing, just increment the PC
ProgramCounter.incPC(); ProgramCounter.incPC();
Cycles.incCycles();
} }
} }

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
import de.darkress.pic16f84sim.microcontroller.Stack; import de.darkress.pic16f84sim.microcontroller.Stack;
@@ -17,9 +16,7 @@ public class Retlw extends LiteralCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
Cycles.incCycles();
Memory.workingRegister = literal; Memory.workingRegister = literal;
ProgramCounter.setPcFromStack(Stack.pop()); ProgramCounter.setPcFromStack(Stack.pop());
Cycles.incCycles(); // Simulate 2-Cycle Instruction
} }
} }

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
import de.darkress.pic16f84sim.microcontroller.Stack; import de.darkress.pic16f84sim.microcontroller.Stack;
@@ -9,8 +8,6 @@ public class Return extends LiteralCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
Cycles.incCycles();
ProgramCounter.setPcFromStack(Stack.pop()); ProgramCounter.setPcFromStack(Stack.pop());
Cycles.incCycles(); // Simulate 2-Cycle Instruction
} }
} }

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@@ -1,6 +1,5 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter; import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
@@ -18,20 +17,20 @@ public class Rlf extends FileRegisterCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
int register = Memory.getRegister(address); int register = Memory.getRegister(address);
int newCarry = register >>7; int carry = Memory.getCarryBit();
int oldCarry = Memory.getCarryBit(); int tmp = carry;
register = ((register <<1) + oldCarry) & 0xFF; carry = register >>7;
register = ((register <<1) + tmp) & 0xFF;
if(newCarry == 1) if(carry == 1)
{ {
Memory.setCarryBit(); Memory.setCarryBit();
} else if(newCarry == 0){ } else if(carry == 0){
Memory.clearCarryBit(); Memory.clearCarryBit();
} }
writeToDestination(destinationBit, address, register); writeToDestination(destinationBit, address, register);
ProgramCounter.incPC();
} }
} }

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@@ -1,37 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Rrf extends FileRegisterCommandUtils implements Command
{
private final int address;
private final boolean destinationBit;
public Rrf(int input)
{
address = input & 0x007F;
destinationBit = checkDestinationBit(input);
}
@Override
public void execute()
{
ProgramCounter.incPC();
Cycles.incCycles();
int register = Memory.getRegister(address);
int newCarry = register & 0x01;
int oldCarry = Memory.getCarryBit();
register = (oldCarry << 7) + (register >>1);
if(newCarry == 1)
{
Memory.setCarryBit();
} else if(newCarry == 0){
Memory.clearCarryBit();
}
writeToDestination(destinationBit, address, register);
}
}

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@@ -1,8 +1,6 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Sublw extends LiteralCommandUtils implements Command public class Sublw extends LiteralCommandUtils implements Command
{ {
@@ -36,8 +34,6 @@ public class Sublw extends LiteralCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
int result = literal - Memory.workingRegister + 256; int result = literal - Memory.workingRegister + 256;
checkZeroBit(result); checkZeroBit(result);

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@@ -1,51 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Subwf extends FileRegisterCommandUtils implements Command
{
private final int address;
private final boolean destinationBit;
public Subwf(int input)
{
address = input & 0x007F;
destinationBit = checkDestinationBit(input);
}
@Override
protected void checkCarryBit(int result)
{
if(result <= 255){
Memory.clearCarryBit();
} else{
Memory.setCarryBit();
}
}
@Override
protected void checkDigitCarryBit(int literal)
{
if(((literal & 0x0F) - (Memory.workingRegister & 0x0F)) < 0){
Memory.clearDigitCarryBit();
} else{
Memory.setDigitCarryBit();
}
}
@Override
public void execute()
{
ProgramCounter.incPC();
Cycles.incCycles();
int result = Memory.getRegister(address) - Memory.workingRegister + 256;
checkZeroBit(result);
checkCarryBit(result);
checkDigitCarryBit(Memory.getRegister(address));
writeToDestination(destinationBit, address, result % 256);
}
}

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@@ -1,29 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Swapf extends FileRegisterCommandUtils implements Command
{
private final int address;
private final boolean destinationBit;
public Swapf(int input)
{
address = input & 0x007F;
destinationBit = checkDestinationBit(input);
}
@Override
public void execute()
{
ProgramCounter.incPC();
Cycles.incCycles();
int result = (Memory.getRegister(address) <<4) & 0xF0;
int tmp = Memory.getRegister(address) >>4;
result += tmp;
writeToDestination(destinationBit, address, result);
}
}

View File

@@ -1,8 +1,6 @@
package de.darkress.pic16f84sim.commands; package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory; import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Xorlw extends LiteralCommandUtils implements Command public class Xorlw extends LiteralCommandUtils implements Command
{ {
@@ -15,8 +13,6 @@ public class Xorlw extends LiteralCommandUtils implements Command
@Override @Override
public void execute() public void execute()
{ {
ProgramCounter.incPC();
Cycles.incCycles();
int result = literal ^ Memory.workingRegister; int result = literal ^ Memory.workingRegister;
checkZeroBit(result); checkZeroBit(result);

View File

@@ -1,29 +0,0 @@
package de.darkress.pic16f84sim.commands;
import de.darkress.pic16f84sim.microcontroller.Cycles;
import de.darkress.pic16f84sim.microcontroller.Memory;
import de.darkress.pic16f84sim.microcontroller.ProgramCounter;
public class Xorwf extends FileRegisterCommandUtils implements Command
{
private final int address;
private final boolean destinationBit;
public Xorwf(int input)
{
address = input & 0x007F;
destinationBit = checkDestinationBit(input);
}
@Override
public void execute()
{
ProgramCounter.incPC();
Cycles.incCycles();
int result = Memory.getRegister(address) ^ Memory.workingRegister;
checkZeroBit(result);
writeToDestination(destinationBit, address, result);
}
}

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@@ -29,13 +29,17 @@ public class CommandDecoder
case 0xD00: case 0xD00:
return new Rlf(input); return new Rlf(input);
case 0xC00: case 0xC00:
return new Rrf(input); //rrf();
break;
case 0x200: case 0x200:
return new Subwf(input); //subwf();
break;
case 0xE00: case 0xE00:
return new Swapf(input); //swapf();
break;
case 0x600: case 0x600:
return new Xorwf(input); //xorwf();
break;
case 0x3900: case 0x3900:
return new Andlw(input); return new Andlw(input);
case 0x3800: case 0x3800:
@@ -57,19 +61,25 @@ public class CommandDecoder
switch(input & 0x3C00) switch(input & 0x3C00)
{ {
case 0x1000: case 0x1000:
return new Bcf(input); //bcf();
break;
case 0x1400: case 0x1400:
return new Bsf(input); //bsf();
break;
case 0x1800: case 0x1800:
return new Btfsc(input); //btfsc();
break;
case 0x1C00: case 0x1C00:
return new Btfss(input); //btfss();
break;
} }
switch(input & 0x3E00) switch(input & 0x3E00)
{ {
case 0x3E00: case 0x3E00:
//addlw();
return new Addlw(input); return new Addlw(input);
//break;
case 0x3C00: case 0x3C00:
return new Sublw(input); return new Sublw(input);
} }

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@@ -1,15 +0,0 @@
package de.darkress.pic16f84sim.microcontroller;
public class Cycles {
private static int cycles = 0;
public static void incCycles()
{
Timer.decreasePrescaler();
cycles++;
}
public static int getCycles() {
return cycles;
}
}

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@@ -4,13 +4,6 @@ import java.util.Arrays;
public class Memory public class Memory
{ {
public static void initMemory()
{
Memory.memory[0x81] = 0xFF; //Option
Memory.memory[0x85] = 0x1F; //TrisA
Memory.memory[0x86] = 0xFF; //TrisB
Memory.setRegister(0x03, 0x18); //Status
}
private static final int MEMORY_SIZE = 0xFF; //Addressable Memory private static final int MEMORY_SIZE = 0xFF; //Addressable Memory
public static int workingRegister = 0; public static int workingRegister = 0;
private static final int[] memory = new int[MEMORY_SIZE]; private static final int[] memory = new int[MEMORY_SIZE];
@@ -54,20 +47,12 @@ public class Memory
setDataFromIndirectAddress(indirectAddress, data); setDataFromIndirectAddress(indirectAddress, data);
return; return;
} }
if(address == 0x01 && !Timer.getPrescalerAssignment()) //Reset PrescalerCounter if change on Option or Timer
// Register
{
Timer.resetTimeToTimerIncrease();
Timer.setCyclesToTimerIncrease(Timer.getCyclesToTimerIncrease() - 1); //Decrease by one to account for
// this command execution
}
if((Arrays.stream(bank0UniqueSpecialRegister).anyMatch(x -> x == address)) && getRegisterBank() == 0) if((Arrays.stream(bank0UniqueSpecialRegister).anyMatch(x -> x == address)) && getRegisterBank() == 0)
{ {
memory[address] = data; memory[address] = data;
return; return;
} }
if((Arrays.stream(bank0UniqueSpecialRegister).anyMatch(x -> x == address)) && getRegisterBank() == 1) //bank0 if((Arrays.stream(bank1UniqueSpecialRegister).anyMatch(x -> x == address)) && getRegisterBank() == 1)
// because of 7 Bit address
{ {
memory[address + 128] = data; memory[address + 128] = data;
return; return;
@@ -87,12 +72,6 @@ public class Memory
private static void setDataFromIndirectAddress(int address, int data) private static void setDataFromIndirectAddress(int address, int data)
{ {
if((address == 0x81 || address == 0x01) && !Timer.getPrescalerAssignment()) //Reset PrescalerCounter if change on Option or Timer Register
{
Timer.resetTimeToTimerIncrease();
Timer.setCyclesToTimerIncrease(Timer.getCyclesToTimerIncrease() - 1); //Decrease by one to account for
// this command execution
}
if((Arrays.stream(bank0UniqueSpecialRegister).anyMatch(x -> x == address)) || (Arrays.stream(bank1UniqueSpecialRegister).anyMatch(x -> x == address))) if((Arrays.stream(bank0UniqueSpecialRegister).anyMatch(x -> x == address)) || (Arrays.stream(bank1UniqueSpecialRegister).anyMatch(x -> x == address)))
{ {
memory[address] = data; memory[address] = data;
@@ -100,6 +79,10 @@ public class Memory
} }
memory[address % 128] = data; // else: Registers.Registers which are mapped memory[address % 128] = data; // else: Registers.Registers which are mapped
memory[address % 128 + 128] = data; //Ensure data is written to both banks to simulate mapping memory[address % 128 + 128] = data; //Ensure data is written to both banks to simulate mapping
if(address == 0x2) //Check if PCL is destination
{
ProgramCounter.loadPc();
}
} }
private static int getRegisterBank() private static int getRegisterBank()
@@ -138,21 +121,6 @@ public class Memory
memory[0x8A] = data & 0x1F; memory[0x8A] = data & 0x1F;
} }
public static int getOption()
{
return memory[0x81];
}
public static int getTimer()
{
return memory[0x01];
}
public static void setTimer(int data)
{
memory[0x01] = data;
}
public static boolean getZeroBit() public static boolean getZeroBit()
{ {
return (memory[0x03] & 0x04) == 0x04; return (memory[0x03] & 0x04) == 0x04;

View File

@@ -36,9 +36,4 @@ public class ProgramCounter
pc++; pc++;
Memory.setPCL(pc & 0x00FF); Memory.setPCL(pc & 0x00FF);
} }
public static void resetProgramCounter() {
pc = 0;
Memory.setPCL(0x0);
}
} }

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@@ -1,76 +0,0 @@
package de.darkress.pic16f84sim.microcontroller;
public class Timer
{
public static int getCyclesToTimerIncrease()
{
return cyclesToTimerIncrease;
}
public static void setCyclesToTimerIncrease(int cyclesToTimerIncrease)
{
Timer.cyclesToTimerIncrease = cyclesToTimerIncrease;
}
private static int cyclesToTimerIncrease = 1;
private static boolean timerEnabled()
{
return (Memory.getOption() & 0x20) != 0x20;
}
public static void resetTimeToTimerIncrease()
{
cyclesToTimerIncrease = getPrescalerFactor();
}
public static boolean getPrescalerAssignment() {
return (Memory.getOption() & 0x08) == 0x08;
}
private static int getPrescalerFactor() {
final int MULTIPLIER = 2;
int prescalerPower = Memory.getOption() & 0x07;
int prescaler = (int)Math.pow(2, prescalerPower);
if(!getPrescalerAssignment())
{
return prescaler * MULTIPLIER;
}
return prescaler;
}
private static void increaseTimerRegister()
{
int timerRegister = Memory.getRegister(0x01);
timerRegister = (timerRegister + 1) % 256;
if(timerRegister == 0) //check for timer Overflow --> interrupt
{
System.out.println("Timer Overflow");
}
Memory.setTimer(timerRegister);
}
public static void decreasePrescaler()
{
if(getPrescalerAssignment()) { // Assigned to WatchdogTimer
cyclesToTimerIncrease--;
if(cyclesToTimerIncrease == 0) {
resetTimeToTimerIncrease();
Watchdog.decreaseWatchdogTimer();
}
} else {
Watchdog.decreaseWatchdogTimer();
}
if(timerEnabled()) {
if(!getPrescalerAssignment()) { // Assigned to timer0
cyclesToTimerIncrease--;
if(cyclesToTimerIncrease == 0) {
resetTimeToTimerIncrease();
Timer.increaseTimerRegister();
}
} else {
Timer.increaseTimerRegister();
}
}
}
}

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@@ -1,32 +0,0 @@
package de.darkress.pic16f84sim.microcontroller;
public class Watchdog
{
private static int watchdogTimer = 18000;
public static int getWatchdogTimer()
{
return watchdogTimer;
}
public static void decreaseWatchdogTimer()
{
watchdogTimer--;
checkWatchdog();
}
private static void checkWatchdog()
{
if(watchdogTimer == 0)
{
System.out.println("Watchdog Time-Out");
Memory.setRegister(0x03, Memory.getRegister(0x03) & 0xEF); //Clear !TO in StatusReg
}
}
public static void resetProgram()
{
Memory.setRegister(0x03, Memory.getRegister(0x03) | 0x10);
watchdogTimer = 18000;
}
}

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@@ -1,8 +1,5 @@
package de.darkress.pic16f84sim.parser; package de.darkress.pic16f84sim.parser;
import de.darkress.pic16f84sim.commands.Command;
import de.darkress.pic16f84sim.decoder.CommandDecoder;
import java.io.File; import java.io.File;
import java.io.FileNotFoundException; import java.io.FileNotFoundException;
import java.util.ArrayList; import java.util.ArrayList;
@@ -11,9 +8,9 @@ import java.util.Scanner;
public class Parser public class Parser
{ {
public static Command[] parser(String filePath) public static List<Integer> parser(String filePath)
{ {
ArrayList<String> instructions = new ArrayList<>(); ArrayList<Integer> program = new ArrayList<>();
try { try {
File file = new File(filePath); File file = new File(filePath);
Scanner scanner = new Scanner(file); Scanner scanner = new Scanner(file);
@@ -22,10 +19,8 @@ public class Parser
if(!data.startsWith(" ")) if(!data.startsWith(" "))
{ {
String commandAndParametersString = "0x" + data.split(" ")[1]; String commandAndParametersString = "0x" + data.split(" ")[1];
String instructionAddress = "0x" + data.split(" ")[0]; int commandAndParameters = Integer.decode(commandAndParametersString);
//int commandAndParameters = Integer.decode(commandAndParametersString); program.add(commandAndParameters);
//program.add(commandAndParameters);
instructions.add(instructionAddress + ", " + commandAndParametersString);
} }
} }
scanner.close(); scanner.close();
@@ -33,16 +28,6 @@ public class Parser
System.out.println("An error occurred."); System.out.println("An error occurred.");
e.printStackTrace(); e.printStackTrace();
} }
Command[] program = new Command[1024];
for(int i = 0; i < instructions.size(); i++)
{
int instructionAddress = Integer.decode(instructions.get(i).split(", ")[0]);
int instruction = Integer.decode(instructions.get(i).split(", ")[1]);
program[instructionAddress] = CommandDecoder.decode(instruction);
}
return program; return program;
} }
} }